ravelin.

A detached fortification, usually triangular, placed outside a main defensive line to shield approaches.

Use it for

Words that belong together

• triangular ravelin
• defensive ravelin

On the page

A ravelin guarded the approach to the gate.

The map showed a triangular ravelin.

They crossed the outer ditch toward the ravelin.

Usage notes

Primary category: architecture. Forms: Singular ravelin; plural ravelins. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.